135478373866 has 8 divisors (see below), whose sum is σ = 221691884544. Its totient is φ = 61581079020.

The previous prime is 135478373861. The next prime is 135478373869. The reversal of 135478373866 is 668373874531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (135478373861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3079053930 + ... + 3079053973.

It is an arithmetic number, because the mean of its divisors is an integer number (27711485568).

Almost surely, 2^135478373866 is an apocalyptic number.

135478373866 is a deficient number, since it is larger than the sum of its proper divisors (86213510678).

135478373866 is a wasteful number, since it uses less digits than its factorization.

135478373866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6158107916.

The product of its digits is 60963840, while the sum is 61.

The spelling of 135478373866 in words is "one hundred thirty-five billion, four hundred seventy-eight million, three hundred seventy-three thousand, eight hundred sixty-six".